com.spotify.helios.authentication.crtauth.CrtAuthProviderFactory.java Source code

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Here is the source code for com.spotify.helios.authentication.crtauth.CrtAuthProviderFactory.java

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/*
 * Copyright (c) 2015 Spotify AB.
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package com.spotify.helios.authentication.crtauth;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.spotify.crtauth.CrtAuthServer;
import com.spotify.crtauth.keyprovider.KeyProvider;
import com.spotify.helios.authentication.AuthClient;
import com.spotify.helios.authentication.AuthProviderFactory;
import com.spotify.helios.authentication.ClientAuthProvider;
import com.spotify.helios.authentication.HttpAuthenticator;
import com.spotify.helios.authentication.ServerAuthProvider;
import com.spotify.helios.authentication.User;
import com.sun.jersey.api.model.Parameter;
import com.sun.jersey.spi.inject.InjectableProvider;

import org.springframework.ldap.core.LdapTemplate;
import org.springframework.ldap.core.support.LdapContextSource;

import java.io.File;
import java.io.IOException;
import java.net.URI;
import java.nio.file.Path;
import java.util.List;

import io.dropwizard.auth.Auth;

public class CrtAuthProviderFactory implements AuthProviderFactory {

    private static final String DEFAULT_CONFIG_FILE_PATH1 = "/etc/default/helios-crtauth";
    private static final String DEFAULT_CONFIG_FILE_PATH2 = "helios-crtauth";

    @Override
    public ServerAuthProvider createServerAuthProvider(final String serverName, final String secret) {
        final ObjectMapper mapper = new ObjectMapper();
        final CrtAuthConfig config;
        try {
            File f = new File(DEFAULT_CONFIG_FILE_PATH1);
            if (!f.isFile() || !f.canRead()) {
                f = new File(DEFAULT_CONFIG_FILE_PATH2);
            }
            config = mapper.readValue(f, CrtAuthConfig.class);
            final LdapContextSource contextSource = new LdapContextSource();
            contextSource.setUrl(config.getLdapUrl());
            contextSource.setAnonymousReadOnly(true);
            contextSource.setCacheEnvironmentProperties(false);
            final LdapTemplate ldapTemplate = new LdapTemplate(contextSource);
            final KeyProvider keyProvider = new LdapKeyProvider(ldapTemplate, config.getLdapSearchPath());

            final CrtAuthServer crtAuthServer = new CrtAuthServer.Builder().setServerName(serverName)
                    .setKeyProvider(keyProvider).setSecret(secret.getBytes()).build();

            final CrtAuthenticator authenticator = new CrtAuthenticator(crtAuthServer);
            final CrtInjectableProvider<User> userCrtAuthProvider = new CrtInjectableProvider<>(authenticator);

            return new CrtServerAuthProvider(userCrtAuthProvider, new CrtHttpAuthenticator(crtAuthServer));
        } catch (IOException e) {
            throw new RuntimeException(String.format("Could not find or read config file at %s or %s.",
                    DEFAULT_CONFIG_FILE_PATH1, DEFAULT_CONFIG_FILE_PATH2));
        }
    }

    @Override
    public ClientAuthProvider createClientAuthProvider(final Path privateKeyPath, final List<URI> authServerUris) {
        return new CrtClientAuthProvider(privateKeyPath, authServerUris);
    }

    class CrtServerAuthProvider implements ServerAuthProvider {
        private InjectableProvider<Auth, Parameter> injectableProvider;
        private HttpAuthenticator httpAuthenticator;

        CrtServerAuthProvider(final InjectableProvider<Auth, Parameter> injectableProvider,
                final HttpAuthenticator httpAuthenticator) {
            this.injectableProvider = injectableProvider;
            this.httpAuthenticator = httpAuthenticator;
        }

        public InjectableProvider<Auth, Parameter> getInjectableProvider() {
            return injectableProvider;
        }

        @Override
        public HttpAuthenticator getHttpAuthenticator() {
            return httpAuthenticator;
        }
    }

    class CrtClientAuthProvider implements ClientAuthProvider {

        private final Path privateKeyPath;
        private final List<URI> authServerUris;

        public CrtClientAuthProvider(final Path privateKeyPath, final List<URI> authServerUris) {
            this.privateKeyPath = privateKeyPath;
            this.authServerUris = authServerUris;
        }

        @Override
        public AuthClient getClient() {
            return new CrtAuthClientImpl(privateKeyPath, authServerUris);
        }
    }

}